Lasting mechanism for tacking and stapling machines.



' -N0. 823,906. PATBNTED JUNE 19, 1906.

v -H. WALTHER.- 1 LASTING MECHANISM FOR TAGKING AND STAPLING MACHINES.

APPLICATION FILED m. 26, 1904.

4 SHEETS-SHEET 1.

No. 823,906. PATENTBD JUNE 19, 1906.

- v H. WALTHER.

LASTING MECHANISM FOR TAOKING AND STAPLING MAGHINBSQ APPLICATION FILED NOV. 26- 1904.

4 SHEETS-SHEBT 2.

'PATBNTED JUNE 19, 1906.

' No. 823,906. g

H I H. WALTHER. I LASTING MECHANISM FOR TAGKING AND STAPLING MACHINES.

I APPLICATION FILE-DID $6. 1904.

4 SHEETS-SHEET 3.

w zicovea,

PATENTED JUNE 19, 1906.

' H. WALTHER/ LASTING MECHANISM FOR'TAGKING AND STAPLING MACHINES.

APPLICATION FILED NOV. 28. 1904.

4 sums-sum 4.

%d% I Z wg- HEINRICH WALTHER, OF WEISSENFELS, GERMANY, ASSIGNOR TO THE FIRM or NOLLESCHE WERKE,

OF VVEISSENFELS; GERMANY.

' LASTING MECHANISM FOR TACKI NG STAPLING MACHINES.

No. 823,906. Specification of Application filed N ember 26, 1904. Serial No- 234,410.

To all whom it may concern.-

Be it known that I, HEINRICH WAL'rHnR, constructor, a subject of the King of Prussia, German Emperor, residing at Weissenfels-onthe-Saale, in the Kingdom of-Prussia and German Empire, have invented certain new and useful Improvements in or Relating to Lasting Mechanism for Tacking and Stapling Machines, of which the following is a specification.

This invention-relates to a lasting mechanism for tacking and stapling machines; and the object thereof is to set up a lasting mechanism with means as hereinafter described whereby the peculiar motions of the lasting Letters Patent; Patented J u ne 1 9, 1 906.

. side view of a lasting mechanism set up in operative position. Fi Zis afront view. Flg. 3 1s a plan of the mec amsm inits normalpotail.

this invention comprises apair of tongs, the

ence characters 6 7. ;:The' closing of said members as well asthe raising and lowering medium of an eccentric 2., mounted 'on the main shaft 1. As the shaft 1 rotates, the cooperation usually done manually are accom' p ished mechanically. I

The means which accomplish the lasting operation performed before tacking or stapling is adapted to pull or draw the uppers or the. cloth over the boot tree or last, so-that the ulppers or clothwill be in a position to receive t e tacks or staples, the'said means during the o eration thereof performing the following asting motions: the closing, raising,

ulling over, pressing downward, and swing.- ing laterally, and after such motions have been performed the tacks or staples are driven in; but as the tacking or stapling mechanism forms no part of this invention and is not claimed the said tacking or stapling mechanism will notbe referred to.

The invention further aims to, provide a lasting mechanism for tackin or stapling machines which shall be simp e in its construction, strong, durable, efficient in its use, and readily set u in operative position with res ect to the tackingor stapling mechanism.

- cordance with t ith the foregoing and other objects in view the invention consists of the novel construction, combination, and arrangement of parts constitutin a lasting mechanism in ac- 's invention and which is hereinafter more specifically referred to, reference being had to the accompanyin drawings,-which form a part of this speci cation; but it is to be understood. that changes, varia tions, and modificationscanbe resorted to which come within the scope of the'claims hereunto a pended.

In the rawings, wherein like reference characters denote corresponding parts centric 2, through the roller 3, elevates the rod '4, whichbears against an adj ustablescrew sition. Fig. 4 is a 'similar view withthemembers of which are indicatedby the refer- A lasting mechanism in-accordance with thereof are efiected indirectly through the 5, carried by the upper end of the member 6 v of the'tongs. The .member T-of the tongs carries a pivot-bolt 8, and upon said bolt 8 v the member 6 is pivoted. At the beginning of the upward movement of the rod 4 the member 6 of thetongs swings around the pivot-bolt 8 and closes. On a continuation of the upward movement of the rod 4 the members 6 and 7 of the tongs are then raised bodily. The member 7 of the tongs is connected to a sleeve 9. (Best shown in Figs.3 and 4.) Said sleeve 9 surrounds the rod 4 and serves as a guide during the raising and lowering as well as the swinging of the tongs. The adjusting-screw 5 permitsof regulating the length of the stroke, as will be. evident,

.and surrounding the rod 4 and interposed be tween the. sleeve 9 and an adjusting-screw 11, carried by the upright P,-is a 0011 tensionspring 10, which acts as a means for cushion ingthe raisingof the tongs and also for caus:

ing the to s to. resume their normal position. It wi 1 be evident that when the tongs are elevated the springlO willbe compressed betweenthe sleeve: .9. and the screw 11, whi'ch tends to cushion. the movement of the throughout the several views, Figure 1 1s a;

This :results in the: member -64 beingbrought nearer the member 7, as said memend of a lever-arm 30*, pivoted, asat l), upon her 6 swings upon the pivot-bolt 8. Thls swinging of the member causes the lower end of move toward the lower end of the member 7, thereby closing the tongs. If the rod 4 is raised by the eccentric 2 to such an extent thatthe jaws of the tongs are closel, the leather or cloth is seized. The lowering of the members 6 and 7 after their elevation is effected by the spring 10, which rests with its bottom end against the sleeve 9, and its upper end bears against the adjustable screw 11. The latter is held in the upward l yextending element or arm P of the slide 12 and there engages a screw-threaded portion, so that in this way the tension of the spring 10 which brings about the downward movement of the members 6 and 7 can be adjusted. The adjusting-screw 5 effects the earlier or later closing of the two members 6 and 7 of the tongs, and thus permits the earlier or later'rising of the tongs.

The operation of pulling over is effected through the medium of a reciprocatory slide 12, which is shifted by a roller H, traveling in a curved groove 13, formed in a cam J, fixed to the driving-shaft 1. g The slide 12 comprises an up er plate A and is mounted inthe frame B o the machine in such a manner as to permit reciprocation thereof. The slide 12 is further provided with a verticallydependin part A, having a circular recess C, 1n whic extends the eccentric 2, the latter having a finger D for operating the hammer 50 of the tacking or sta ling mechanism. The plate A ofthe slide 12 has secured to it a screw-stud F, which extends through a slot G, formed in the machine and projects into the recess G, and on the lower end of said stud F is carried the roller H. The arrangement of the groove 13 in the cam J is such that when the cam is rotated it will cause the reciprocation of the slide 12 in both directions, owing to the travel of the roller H in the groove 13. The eccentric 2 is connected to the shaft 1 by means of a groove and feather K and is provided with an extended hub L, having a groove N, into which two screws 0 engage. These screws 0 at their inner ends are provided with rollers and project laterally as well as being secured tothe vertically-extending part A of the slide 12. Owing to this construction the eccentric 2 and fin er D are moved on the shaft 1 simultaneous y with the slide-12, and the'engagethe member 6 to ment of the roller 3 with the eccentric 2 is thereby insured.

The swin 'ng motion of the tongs takes place aroun the rod 4, this beingefieeted by the clips or'knobs of the tongs w lch grip the leather bein situated outside of the axis of oscillation o the tongs.

The swinging motion of the tongs is had by the operator sh fting a fork 30, carried on one 6 upon the pivot 8 ,2

the machine-frame and operating a mechanism to be now described. The other end of the lever-arm 30 is provided with a toothed segment 14, which engages a toothed segment 15, carried by a verticallv-extemling oscillatory shaft 16, mounted in the machineframe, to which is secured a lever-arm 17, having the free end thereof slotted, as at 17, and in the said slot 17 extends a pin 18, carried by a slide 18. When the lever-arm 30 is swung, the slide 18 will move in a line perpendicular to the axis of the shaft 1 through the medium of the se ments 14 and 15, slotted lever-arm 17, and the pin 18. The slide 18 has mounted thereon a pair of rollers 19, which are ada ted to engage and laterally swing outward y and inwardly a pair of bell-crank levers 20, which are pi voted, as at 21. To the ends of the levers which are not enga ed by the rollers 19 is secured one end of t e springs 22, while the other end of the springs 22 is secured to the extension which connects the member 7 of the tongs with the sleeve 9. By swinging outwardly one of the bell-crank levers 20 the spring 22, secured thereto, is stretched and t e tongs are swung in that direction, and at the same time the other lever 20 is swung inwardly, and the respective spring 22 therefore becomes loose, as is shown in Fig. 4. After the tongs have been swung out laterally and have grip ed the leather it is necessary that during the motion of the pulling over the tongs should be brought back into and if necessary beyond the normal position for the purpose of making the folds, and such operation will be hereinafter referred to.

In order that the tongs when being swung back may be able to effect a yielding pull, the two rollers 19 are arranged upon adjustable sprin -pins 24, so that when the leather is stretc ied too strongly the rollers 19 may be displaced by the projections 23, and conse quently offer no rigid resistance.

The slide 18 is supported in the frame of the machine at right an les to the slide 12 and is ad 'ustable. In or or to allow the assage of t e other parts of the machine, 1t is provided with a cranked or yoke-shaped portion b in the center and with journals or pins 0 c, which are guided in the additional part a a of the frame B. It follows that when the fork is turned toward the right in the direction of the arrow, Fi' 4, the slide 18 is moved toward the left. he slide 18 is then pressed with one of its rollers 19 against one of the lovers 20 if it is desired to move the tongs laterally. When the end 20 is moved by the roller 19 toward the left, the lever 20 in question turns toward the left and the s ring 22 on the left-hand SidB'lS stretched. If the slide 18, with the roller 19,. were moved toward the right, then the other lever 20 would turn toward the right and the right-hand spring 22 be stretched. The stretching of the springs by'the pressing of one of the rollers 19 against one of the levers 20 is effected, owing to the levers 20 being bell-cranklevers. The operation of the mechanism whereby the tongs are brought back to their central position after having been displaced toward the right or left under theinfiuence of the lever .is as follows: Referring to Fig. 4, when the parts are in the relative positions therein shown the grippers begin their forward or overreaching movement under the influence of the plunger 4 and its associated mechanism. At this time the right-hand arm 23 ofthe sleeve 9 is in contact with the corresponding roller 19, as shown in Fig. 4, and as the tongs move forwardly, the roller 19 remaining stationary, the arm 23, above referred to, causes the tongs to .turn from right to left or toward their central position about the axis of the plunger 4. This movement, in case the knee-lever 30 has not yet been released by the operator or turned back into its central osition, is permitted by an additional stretc g of the left-hand spring 22, and as lon as the lever 30 is held atone side or the ot er of its central position the tongs will at each operation of the machine carried b one of the members of sai terposed between said a be oscillated back and forth, either toward the right or toward the left of their central osition, as the case may be, to effect the olding of the upper.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is- 1. A lasting mechanism for tacking-and staplingmachines, comprising a verticallymovable pair of tongs, a regulating-screw tongs,

avertica ly-movablerod adapted to engage said screw and impart a vertical and closing movement to the tongs, a sleeve carried. by one of the members of the ton s and adapted to surround said rod, an ad ustable sleeve through which said rod (passes, a spring in justable sleeve and of the tongs and adapted when tension is applied to one of the springs to cause the tongs to be displaced in one direction and when tension is applied to the other of the 8 rings to cause the tongs to be displaced int e opposite direction, a pair of levers connected to the other end of the spring for applying tension thereto, a pair of rollers for actuatin the levers, a slide for shifting the rollers, an

means for shifting the slide.

4. A lasting mechanism for tacking and stapling machines, comprising the combination with an oscillatory pair of tongs having the gripping ends thereof situated outside of the axis of oscillation, of means for imparting a vertical and closing movement to the tongs, and means. for moving the tongs horizonta ly and means for causing the tongs to oscillate during such movement.

5. A lasting mechanism for tacking and staplin machines, com rising the combinationwit apairof lateral -displaceabletongs,

of means for displacin t e tongs, said means consisting of a pair 0 springs connected to opposite sides of one of the members of the tongs and adapted when one of the springs to cause the tongs to be displaced in one directionand when tension is a plied to the other of the springs .to cause t e tongs to be displaced in the opposite direction, means for applying tension to the s rings, means. for actuating said tension-app ying means, and means for operating said actuating means.

6. A lasting mechanism for tacking and stapling machines, com tion witha pair of latera ly-displaceable tongs of means for displacin the tongs, said means consisting of a air 0 springs connected to opposite sides 0 one of the members of the the sleeve carried by one of the members of the tongs and adapted to automatically lower said tongs, and an eccentric for moving said rod-vertically to engage the screw.

2. In alasting mechanism for tacking and stapling machines, the combination with a air of aterally-displaceable tongs, of means or displacing the tongs,,said means consisting of a pair of springs connected at one end with the opposite sides of one of the members of the tongs and adapted when tension is applied to one of the springs to cause the tongs to be displaced in' one direction and when tension is applied to the other of the s rings to cause the tongs to be displaced in 't e opposite direction, a pair of lovers connected to levers, and as 'de for-shifting the rollers.

tongs and adapted when tension is applied to one of the springs to cause the tongs to be displaced in one direction and when tension isapplied tothe other of the springs to cause the tongs to be displaced in t e opposite direction, means for applying tension to the s rings, means for actuating said tension-app ying means, means for operating said actuatmg means, and means for operating the operating means for said actuating means-L tension is applied to" rising the combina-' 7. In a lasting mechanism for tackin and staplingqmachines, com rising the com ina-' tion wit a pair of lateral y-displaceable tongs,

means for displacing the tongs, said means consisting of a pair of springs 'connectedto opposite sides of one ofthemembers of the tongs, and adapted'when tension is applied to one of the springs to cause the tongs to be displaced in one direction and when tension is applied to the other of the s rings to cause I In testimony whereof I have hereunto set the tongs to be displaced in t e opposite dimy hand in presence of two subscribing witrection, a pair of levers for impartlng tension nesses.

to the springs, a pair of rollers for actuating HEINRICH WALTHER. the levers, a slide for shifting the levers, a shifting means for the slide, and a lever for operating said means;

Witnesses:

Or'ro REUTER, HANS ZIMMERMANN. 

